Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Rosalie Marie Larson, MSN, RN

Critical Care Medicine Registered Nurse in Marrero, LA · enumerated 2017.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033649124

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Registry record

Entity type Individual (Type 1)

Name Ms. Rosalie Marie Larson

Credential MSN, RN

Sex Female

Practice address Marrero, LA, 70072

Phone (504) 349-2400

Enumeration date Jun 13, 2017

Last updated in NPPES Jun 13, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WC0200X Critical Care Medicine Registered Nurse Nursing Service Providers · License RN084387 (LA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Rosalie Larson's NPI record?

Cross-check NPI 1033649124 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1033649124 active?

Yes, as of the latest NPPES snapshot, NPI 1033649124 is active (record last updated 2017-06-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-06-13.